NR V2X resource pool design
In the field of wireless communication systems or networks, the design of resource pools as they may be used in sidelink communications among users of the wireless communication system, for example in V2X applications, is described. In particular, an improved resource pool design, for example for resource pools to be used in sidelink communications in V2X services in view of the advantages defined by the NR 5G standard, is presented.
1. A user equipment, UE, for a wireless communication system, the wireless communication system providing a resource set, the resource set comprising a plurality of resources to be allocated for respective transmissions in the wireless communication system, wherein
the UE is served by a base station of the wireless communication system,
the UE communicates with the base station and/or with one or more further UEs of the wireless communication system using resources from the resource set,
the resource set comprises a plurality of subcarriers in the frequency domain and a plurality of symbols in the time domain, the resource set comprising at least one bandwidth parts,
a plurality of resource pools are defined within the bandwidth part, the plurality of resource pools comprising at least a first resource pool and a second resource pool, wherein the first resource pool is a resource pool comprising resources to be used for transmitting and/or for receiving, and wherein the second resource pool is a resource pool comprising resources to be used for transmitting and/or for receiving;
the bandwidth part comprises a control channel for each resource pool for handling control messages and scheduling assignment messages, the control messages pointing to data to be transmitted inside the respective resource pool, and
UE is configured by the base station with the resources from one or more of the plurality of bandwidth parts to be used for the communication with the base station and/or with the one or more further UEs.
2. The user equipment, UE, of claim 1 , wherein the UE is configured to receive a configuration message and/or configured by a stored pre-configuration in the out-of-coverage case, the configuration message and/or the stored pre-configuration defining the plurality of bandwidth parts across the resource set.
3. The user equipment, UE, of claim 1 , wherein the UE is configured to receive a signaling indicating an activation or deactivation of one or more of the bandwidth parts.
4. The user equipment, UE, of claim 1 , wherein, in case only a single bandwidth part is activated, the single bandwidth part comprises a control channel UE-specific search space control channel with a common search space so as to allow the UE to handle at the same time unicast or multicast communications and broadcast communications using the single bandwidth part.
5. The user equipment, UE, of claim 1 , wherein, in case at least a first bandwidth part and a second bandwidth part are activated, the first bandwidth part comprises at least a control channel UE-specific search space, and the second bandwidth part comprises at least a control channel with a common search space, so as to allow the UE to handle at the same time unicast communications and broadcast communications using the first and second bandwidth parts.
6. The user equipment, UE, of claim 1 , wherein, in case at least a first bandwidth part and a second bandwidth part are activated, the first bandwidth part comprises at least a control channel UE-specific search space, and/or a control channel with a common search space, and the second bandwidth part comprises at least a control channel with a UE-specific search space and/or a control channel with a common search space, so as to allow the UE to handle at the same time unicast communications and broadcast communications using the first and second bandwidth parts.
7. The user equipment, UE, of claim 1 , wherein a control channel is defined by resources of only one of the bandwidth parts.
8. The user equipment, UE, of claim 1 , wherein one of the bandwidth parts is a default bandwidth part where resource allocations for one or more services are send, wherein the control resources are either configured by the wireless communication system or pre-configured in the UE, the default bandwidth part comprising at least one control resource set, CORESET, with a common search space, CSS, so as to allow the UE to listen to the one or more services in the UE's vicinity.
9. The user equipment, UE, of claim 1 , wherein the control channel in the default bandwidth part points to another control channel in another bandwidth part where an actual transmission takes place, so as to make other UEs aware that there is another bandwidth part with specific control resources that are to be monitored and/or decoded by the UE.
10. The user equipment, UE, of claim 1 , wherein the control channel in the default bandwidth part points to another data channel in another bandwidth part, and wherein the UE automatically switches back to the default bandwidth part after a transmission of data, or a timeout in the second bandwidth part, or responsive to a control signaling.
11. A method for operating a user equipment, UE, of a wireless communication system, the wireless communication system providing a resource set, the resource set comprising a plurality of resources to be allocated for respective transmissions in the wireless communication system, the method comprising:
serving the UE by a base station of the wireless communication system
using resources from the resource set for a communication of the UE with the base station and/or with one or more further UEs of the wireless communication system, wherein
the resource set comprises a plurality of subcarriers in a frequency domain and a plurality of symbols in a time domain, the resource set comprising at least one bandwidth part,
a plurality of resource pools are defined within the bandwidth part, the plurality of resource pools comprising at least a first resource pool and a second resource pool, wherein the first resource pool is a resource pool comprising resources to be used for transmitting and/or for receiving, and wherein the second resource pool is a resource pool comprising resources to be used for transmitting and/or for receiving,
the bandwidth part comprises a control channel for each resource pool for handling control messages and scheduling assignment messages, the control messages pointing to data to be transmitted inside the respective resource pool, and
the method comprises configuring the UE, by the base station, with the resources from one or more of the plurality of resource pools to be used for the communication with the base station and/or with the one or more further UEs.
12. The user equipment, UE, of claim 1 , wherein the resource set comprises a plurality of bandwidth parts, the plurality of bandwidth parts comprising at least a first bandwidth part and a second bandwidth part, the first bandwidth part comprising a first bandwidth in the frequency domain, and the second bandwidth part comprising a second bandwidth in the frequency domain, the first bandwidth and the second bandwidth being different.
13. The user equipment, UE, of claim 1 , wherein at least one of the plurality of bandwidth parts comprises a plurality of resource pools.
14. A base station for a wireless communication system, the wireless communication system providing a resource set, the resource set comprising a plurality of resources to be allocated for respective transmissions in the wireless communication system, wherein
the base station serves one or more user equipments, UEs, of the wireless communication system,
the resource set comprises a plurality of subcarriers in a frequency domain and a plurality of symbols in a time domain, the resource set comprising at least one bandwidth part,
a plurality of resource pools are defined within the bandwidth part, the plurality of resource pools comprising at least a first resource pool and a second resource pool, wherein the first resource pool is a resource pool comprising resources to be used for transmitting and/or for receiving, and wherein the second resource pool is a resource pool comprising resources to be used for transmitting and/or for receiving;
the bandwidth part comprises a control channel for each resource pool for handling control messages and scheduling assignment messages, the control messages pointing to data to be transmitted inside the respective resource pool, and
the base station configures the one or more UEs with resources from one or more of the plurality of resource pools to be used for a communication with the base station and/or with one or more further UEs.